diff --git a/client.c b/client.c
index 70c1a007..ec63fc07 100644
--- a/client.c
+++ b/client.c
@@ -25,6 +25,7 @@
 
 #include <errno.h>
 #include <event.h>
+#include <fcntl.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>